前一段时间网站一直用xe网站的数据，用着用着发现被xe禁止了 Automated extraction of our content is prohibit ed。所有不得不找其他网站进行添加，加了个google的，发现不是实时汇率更新，具体不太清楚是1天还2天，寻找一圈发现yahoo的还可以，更新频率大约是1小 时一更新 ，写了个接口给大家分享
<?php

/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 2019/8/21
 * Time: 18:20
 */
class 实时汇率接口
{

}
function getExchangeRate($from_Currency,$to_Currency)
{
    //$amount = urlencode($amount);
    $from_Currency = urlencode($from_Currency);
    $to_Currency = urlencode($to_Currency);
    $url = "download.finance.yahoo.com/d/quotes.html?s=".$from_Currency.$to_Currency."=X&f=sl1d1t1ba&e=.html";
    $ch = curl_init();
    $timeout = 0;
    curl_setopt ($ch, CURLOPT_URL, $url);
    curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch,  CURLOPT_USERAGENT , "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1)");
    curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
    $rawdata = curl_exec($ch);
    curl_close($ch);
    $data = explode(',', $rawdata);
    return $data[1];
}
//调用方法
echo getExchangeRate("CNY","USD");

